I have couple of questions about orange widgets?Is there any documentaion for developer to create there own widgets?Can you create a widget which does not inherit from OWWidget?One suggestion: Should we add a tree control for widget besides tab and toolbar? This will allow to select widgets without image.

My motivation is to experiment with orange to do some data flow programming with it. This is one of the best "visual programming" env. and very clear code. It is dead simple to create once own widgets.